block: mark blk_rq_bio_prep as inline

This function just has a few trivial assignments, has two callers with
one of them being in the fastpath.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-core.c

@@ -1428,17 +1428,6 @@ bool blk_update_request(struct request *req, blk_status_t error,
 }
 EXPORT_SYMBOL_GPL(blk_update_request);
 
-void blk_rq_bio_prep(struct request *rq, struct bio *bio, unsigned int nr_segs)
-{
-	rq->nr_phys_segments = nr_segs;
-	rq->__data_len = bio->bi_iter.bi_size;
-	rq->bio = rq->biotail = bio;
-	rq->ioprio = bio_prio(bio);
-
-	if (bio->bi_disk)
-		rq->rq_disk = bio->bi_disk;
-}
-
 #if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
 /**
  * rq_flush_dcache_pages - Helper function to flush all pages in a request

block/blk.h

@@ -51,7 +51,6 @@ struct blk_flush_queue *blk_alloc_flush_queue(struct request_queue *q,
 		int node, int cmd_size, gfp_t flags);
 void blk_free_flush_queue(struct blk_flush_queue *q);
 
-void blk_rq_bio_prep(struct request *rq, struct bio *bio, unsigned int nr_segs);
 void blk_freeze_queue(struct request_queue *q);
 
 static inline void blk_queue_enter_live(struct request_queue *q)
@@ -100,6 +99,18 @@ static inline bool bvec_gap_to_prev(struct request_queue *q,
 	return __bvec_gap_to_prev(q, bprv, offset);
 }
 
+static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio,
+		unsigned int nr_segs)
+{
+	rq->nr_phys_segments = nr_segs;
+	rq->__data_len = bio->bi_iter.bi_size;
+	rq->bio = rq->biotail = bio;
+	rq->ioprio = bio_prio(bio);
+
+	if (bio->bi_disk)
+		rq->rq_disk = bio->bi_disk;
+}
+
 #ifdef CONFIG_BLK_DEV_INTEGRITY
 void blk_flush_integrity(void);
 bool __bio_integrity_endio(struct bio *);